Spy Optic Men's Logan Sunglasses feature Happy Lens technology that blocks harmful rays and glare while harnessing the feel-good benefits of light and providing enhanced color and contrast. In this process, long-wave blue light stimulates the brain's production of serotonin, responsible for keeping your internal clock on schedule. And that can help you feel more alert and, well, happy. All in a streamlined wraparound style for cool good looks.
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